Queries produced by iterators that are grouped by a relation causes crash

[iiYese]

Version:

02f4c20

Minimum code to reproduce:

use flecs_ecs::prelude::*;

#[derive(Component)]
struct Foo;

fn main() {
    let world = World::new();
    world.system::<()>().each_iter(|iter, _, _| {
        bar(&iter.world());
    });
    world.progress();
}

fn bar(world: &World) {
    query!(world, (Foo, flecs::Wildcard))
        .group_by::<Foo>()
        .build()
        .each(|_| {})
}

Error received:

fatal: flecs.c: 40045: assert: !(world->flags & EcsWorldReadonly) INTERNAL_ERROR

[Indra-db]

closed, see: SanderMertens/flecs#1508